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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.car.cts;
     18 
     19 import static org.junit.Assert.assertTrue;
     20 import static org.junit.Assume.assumeTrue;
     21 
     22 import android.car.Car;
     23 import android.content.ComponentName;
     24 import android.content.Context;
     25 import android.content.ServiceConnection;
     26 import android.os.IBinder;
     27 import android.os.Looper;
     28 
     29 import androidx.test.InstrumentationRegistry;
     30 
     31 import com.android.compatibility.common.util.FeatureUtil;
     32 
     33 import org.junit.After;
     34 
     35 import java.util.concurrent.Semaphore;
     36 import java.util.concurrent.TimeUnit;
     37 
     38 public abstract class CarApiTestBase {
     39     protected static final long DEFAULT_WAIT_TIMEOUT_MS = 1000;
     40 
     41     private Car mCar;
     42 
     43     private final DefaultServiceConnectionListener mConnectionListener =
     44             new DefaultServiceConnectionListener();
     45 
     46     protected void assertMainThread() {
     47         assertTrue(Looper.getMainLooper().isCurrentThread());
     48     }
     49 
     50     protected void setUp() throws Exception {
     51         assumeTrue(FeatureUtil.isAutomotive());
     52 
     53         Context context =
     54                 InstrumentationRegistry.getInstrumentation().getTargetContext();
     55         mCar = Car.createCar(context, mConnectionListener, null);
     56         mCar.connect();
     57         mConnectionListener.waitForConnection(DEFAULT_WAIT_TIMEOUT_MS);
     58     }
     59 
     60     @After
     61     public void disconnectCar() throws Exception {
     62         if (mCar != null) {
     63             mCar.disconnect();
     64         }
     65     }
     66 
     67     protected synchronized Car getCar() {
     68         return mCar;
     69     }
     70 
     71     protected class DefaultServiceConnectionListener implements ServiceConnection {
     72         private final Semaphore mConnectionWait = new Semaphore(0);
     73 
     74         public void waitForConnection(long timeoutMs) throws InterruptedException {
     75             mConnectionWait.tryAcquire(timeoutMs, TimeUnit.MILLISECONDS);
     76         }
     77 
     78         @Override
     79         public void onServiceDisconnected(ComponentName name) {
     80             assertMainThread();
     81         }
     82 
     83         @Override
     84         public void onServiceConnected(ComponentName name, IBinder service) {
     85             assertMainThread();
     86             mConnectionWait.release();
     87         }
     88     }
     89 }
     90